Screw-nut-locking device.



No. 7l6,860. Patented Dec. 30, 1902.

A. BUDDE.

SCREW NUT LOCKING DEVICE.

(Application v tiled Sept. 9, 1002,)

(No Model.)

4.! I ulllllll mi wnaus sYcas ca, Pummuwo. wasnmcmn. ov Q UNITED STATESPATENT AUGUST BUDDE, OF RADEVORMVVA'LD, GERMANY,'ASSIGNOR TO THE FIRM OFPETER HOLZRICHTER, OF RADEVORMXVALD, GERMANY.

SCREW-NUT-LOCKING DEViCE.

SPECIFICATION forming part of Letters Patent No. 716,860, dated December30, 1902.

Application filed September 9. 1902. Serial No. 122,707. (No model.)

in nut-locks, and has for its object to provide novel and effectivemeans for securely fastening nuts upon their bolts, while at the sametime permitting of the ready removal of the nuts, if found desirable ornecessary.

To this end the invention contemplates a formof nut-lock embodying aminimum number of parts and easily manipulated to provide for thelooking or removal of the nuts.

A further object of the invention is to provide a nut-lock usefulgenerally asa nut-locking device, but possessing special utility as arail-jointfastening. 7

With these and many other objects in view, which will more readilyappear as the nature of the invention is better understood, the sameconsists in the novel construction, combination, and arrangement ofparts, which will be hereinafter more fully described, illustrated, andclaimed.

In the accompa ying drawings, Figure l is a front elevation of arail-joint, illustrating a pair of bolts equipped with the improvednutlock fastening contemplated by the present invention. Fig. 2 is ahorizontal longitudinal sectional view of the rail-joint constructionshown in Fig. 1, exposing the elements of the nut-locking device inplan. Fig. 3 is a vertical cross-sectional view on the line A B of Fig.2. Fig. 4= is a detail view of the detachable fastening-key and alsoillustrating the retaining engagement between the said key and the fixedplate member with which it engages to prevent accidental displacement.Fig. 5 is a detail elevation ofone of the locking-plates, showing theform of nutengaging opening therein.

Like reference-letters designate corresponding parts throughout theseveral figures of the drawings.

In carrying out the invention the same is usually constructed forapplication to a pair of bolts and the nuts thereof arranged in therelation such as found in connection with rail-joints and equivalentstructures, so for illustrative purposes the invention is shown in thedrawings as applied to a pair of bolts and nuts of an ordinaryrail-joint.

Referring particularly to the drawings, the letter R designates thesection of rail carrying the pair of spaced bolts B, on the threadedends of which are removably mounted the polygonal nuts e, whichcooperate with the fish-plate d of the joint, which plate is an elementof the rail-joint structure and constitutes no part of the presentinvention.

While the invention, in fact, provides a construction embodying commonmeans for locking the nuts on both bolts, it is preferable in thecarryingout of the invention to associate with each nut e an individuallocking-plate 7o aprovided therein with a polygon alnut-engaging opening6, corresponding in shape to the external configuration of the nut, buthaving a greater number of angles than the latter. The angles or notchesof the opening fit over and engage the angles or corners of the nut.

The separate locking-plates a after being slipped over the nuts e arearranged in precise alinement, and the same are designed to be held in alocking position through theme- 8c dium of a common fastening meansconsisting, essentially, of a detachable fasteningkey 0 and a base-platek.

The base-plate k is designed to be arranged at the inner sides of thenuts 6, so as to be interposed between the same and the plate (1,against which the said base-plate rests. The base-plate 7c is providedin the opposite end portions thereof with the bolt-openings it,receiving the bolts 73, and at an intermediate point between the boltsthe said base-plate is formed with a forwardly-projected recessed offsete', which lies in rear of the adjacent ends of the plates at andconstitutes a socket for receiving the inner vertical leg members 0 ofthe inverted approximately U-shaped fastening-key o. The outerleg c ofthis fastening-key is provided at its lower end with an offstanding lip0 which is engaged by the hand or suitable tool for removing and re- I00placing the key. The lower end of the inner leg 0' of said key ispreferably provided with a retaining-deflection 0 adapted to have aspring engagement with the bottom edge of the base-plate 7a to preventaccidental displacement of the key.

By removingthe fastening-key both of the locking-plates a are freed, sothat they may readily be slipped oft of the nuts.

Changes in the form, proportion, and minor details of construction maybe resorted to without departing from the spirit of the invention orsacrificing any of the advantages thereof.

Having thus described the invention, what is claimed, and desired to besecured by Letters Patent, is-

, 1. Ina nut-1ockingdevice,-the combination with the bolt and the nutthereof, of a stationary base-plate arranged on the bolt at the innerside of the nut and provided with a socket element, a 1ocking-platehaving a nutengaging opening receiving the nut, and a detachablefastening-key removably placed astride of both the locking-plate and thebaseplate and having a member engaging the said socket element of thebase-plate.

2. In a nut-lock, the combination with the spaced bolts and the nutsthereof, of a stationary base-plate mounted on the bolts at the innerside of the nut-and provided at an intermediate point with a recessedoffset forming a socket, separate locking-plates for the individual nutshaving nut engaging openings, and an inverted-U-shaped fastening-keydetachably placed astride the baseplate and the locking plates at theadjacent edges of the latter, said fastening-key having its inner legremovablyengaging within the socket of the base-plate.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

AUGUST BUDDE.

Witnesses:

OTTO KoNIG, J. A. RITTERSHAUS.

